Bennie,
I know that exact feeling--a weird, kind of painful/uncomfortable feeling when the stoma is very new. It takes the stiches around the stoma a long time to dissolve (one of mine took almost 2 months! Just dissolved a few weeks ago!), and as they are healing you are very aware of any movement/output of the stoma.
The best thing I can tell you daughter is that the feeling will definitely lessen, and not feel uncomfortable/painful in about 1-2 months. At first, I kind of liked the fact that I felt stuff coming out--I was so paranoid about leaks, but I could tell anytime something was going into the bag so I would just empty it then.
Anyway, I wish your daughter good luck with her future surgeries--I am sure the first one is the hardest because you don't know what to expect.. :)